Nintendo has a treat-filled eShop update lined up for Halloween and the rest of the week, including the awesome Super Castlevania IV as a Wii U Virtual Console release.

LEGO Marvel Super Heroes is now live as well, and later in the week Wii Fit U will be downloadable free of charge. There are a few game deals as well, including $10 Shin Megami Tensei IV for the 3DS.

Read on.

Nintendo eShop on Wii UWii FitU – Trial Version – With Wii Fit U, you can create fitness routines, review progress and compare with friends in online Gym Communities and Miiverse. Shape up with more than 70 fun activities, from new ones using the Wii U GamePad controller to Wii Fit favorites. Current Wii U and Wii Balance Board owners can download Wii Fit U from the Nintendo eShop and use it free for 31 days. Then purchase and sync a Fit Meter to keep the game for as long as you like. A Fit Meter sells at a suggested retail price of only $19.99. Wii Fit U will be available on Nov. 1.

LEGO MarvelSuper Heroes – LEGO Marvel Super Heroes features an original story scanning the entire Marvel Universe. Players take control of Iron Man, Spider-Man, the Hulk, Captain America, Wolverine and many more Marvel characters as they unite to stop Loki and a host of other Marvel villains from assembling a super-weapon capable of destroying the world.

Virtual Console on Wii USuper Castlevania IV – In Super Castlevania IV – originally released on the Super NES™ in 1991 – players arm the legendary whip and take on the role of Simon Belmont on a quest to defeat Dracula and his evil minions. Using many additional weapons, including axes, holy water, crosses, knives and a magical stopwatch that can stop the flow of time, Simon must travel through 11 stages to reach Dracula’s Castle, all the while overcoming perilous traps and hideous monsters.

Virtual Console on Nintendo 3DSMilon’s Secret Castle – In Milon’s Secret Castle, Milon must explore the depths of a maze-like castle while defeating monsters that roam its corridors. The challenging game was originally released for the NES™ in 1986.

Nintendo eShop SalesShin Megami TenseiIV – Buy Shin Megami Tensei IV for $10 off Nov. 4-11 in the Nintendo eShop on Nintendo 3DS. Critics call this one of the best entry points for the franchise. The game puts you in charge of fighting and recruiting demons in an epic RPG adventure.